message("CMAKE_SOURCE_DIR' is " ${CMAKE_SOURCE_DIR})
message("CMAKE_CURRENT_SOURCE_DIR' is " ${CMAKE_CURRENT_SOURCE_DIR})
message("CMAKE_CURRENT_LIST_DIR' is " ${CMAKE_CURRENT_LIST_DIR})
message("PROJECT_SOURCE_DIR' is " ${PROJECT_SOURCE_DIR})
message("PROJECT_ROOT_DIR_src is:" ${PROJECT_ROOT_DIR})
